Fluid-motor



Patented may 2, I899.

a, n. BOND. FLUID MOTOR.

(Application filed. may 28, 1398.)

(No Model.)

INVENTOR Gear e R. Bond,

WITNESSES BY Q My) TTORNEY5 mus wzfzns 90., PHOTQUTHQ. wxsnlNGToM u cNHED STATES GEORGE R. BOND, OF LITHONIA, GEORGIA.

FLUID-MOTOR.

SPECIFICATION forming part of Letters Patent No. 624,163, dated May 2,1899.

Application filed May 28, 1898. Serial No. 681,525. No model.)

To aZZ w7t07n it 777/(LZ/ concern.-

Be it known that I, GEORGE R. BOND, a citizen of the United States ofAmerica, and a resident of Lithonia, in the county of De Kalb and Stateof Georgia, have invented certain new and useful Improvements in Fluid-Motors; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, and to letters of referencemarked thereon, which form a part of this specification.

This invention relates to motors, and more especially to that class ofmotors in which a reciprocable movement is produced and converted to arotary motion.-

To this end the invention consists of the device hereinafter set forth.

In the accompanying drawings, Figure l is a plan of the device,partially in section. Fig. 2 is a vertical section of the hollowpistons, showing the valve-operating mechanism therein.

In the figures like reference-marks indicate corresponding parts in bothviews.

A and A are cylinders, being duplicates and situated diagonally oppositeeach other on a suitable frame and opening inwardly. On the side of eachof these cylinders A and A are valves ct and a, which control thesteam-supply and are connected in any desired manner, so as to openalternately, admitting steam to one cylinder and shut it oif from theother. Pipes a supply the fluid under pressure through the chest awhence it passes to the interior of the cylinder A and A as soon as thevalve a and a, respectively, is open. I

B and B are pistons which fit within the cylinders A and A and arethemselves cylindrical in form, being provided at their inner ends withvalve-seats Z) for a valve I), mounted upon a suitable plunger b whichis reciprocable longitudinally of the said piston B and is adapted toseat upon the aforesaid valve-seat and close the opening in the innerend of said piston. -At its outer end each piston has an opening whichis as large in diameter as the size of the piston will permit, andconnected to and communicating internally with said pistons,respectively, at their outer ends are flexible tubes 0 and O, the otherend of said tubes being connected to stationary abutments c and 'c,which have pipes c and 0 leading therefrom, as will be herein after setforth.

D are guides, and cl is a yoke which is secured to the outer ends of thepistons B and B and slides longitudinally of the guides D, a pitman (1connecting the said yoke with the crank-shaft (1*. The valves B areoperated by means of a rock-shaft b carrying arms Z2 and b on its endsand being mounted in the piston, so that the arm 5 loosely engages theplunger or stem 6 while the arm b engages pins Z1 set at each end of thestroke, whereby the valve 17' is opened and closed at the proper time inthe stroke of its correlative piston.

E is a supplementary cylin(ler,which is provided with a piston 6,connected by a pistonrod c with the yoke (I, about the middle thereof,and opposite the point of connection of the pitman d. The pipe 0 leadsinto one end of this cylinder E and the pipe 0 leads into the other endthereof, pipes e and a provided with check-valves c and c respectively,entering the correlative ends of the said cylinder and being connectedto an exhaust-pipe e to convey the exhaust from the entire motor to anydesired place.

The operation of this device is as follows: The device has justcompleted a stroke in the direction of the arrow X, Fig. 1, and thevalves a and b are open, and thereby fluid under pressure is passingfrom the chamber a past the valve a and into the cylinder A, forcingforward the piston B, while steam is passing from the cylinder A intopiston B, thence along the flexible tube C and pipes C to thecorrelative end of the cylinder E.

Now as soon as the piston B has moved in the direction of the arrow Ytothe limit of its movement the arm I) will strike the pin B and bypartially rotating the shaft 12 will cause the stem 71 to move in adirection to close the valve 1), and the valve a will be openedsimultaneously with which the valve a will be closed and the valve (1 ofthe piston B will be opened, whereby the steam entering the cylinder Awill act upon the movable abutment formed by the valve 7) and that endof the piston B, andso force the piston B and the yoke d in thedirection of the arrow X, steam passing from the cylinder A past thecorrelative valve 72 and the piston B into a flexible tube 0, thence byWay of the pipe 0 to the end of the cylinder E, from which the piston eis then moving. During this time the steam which has partially exhaustedinto the cylinder B is being forced out through the pipe 6 and thecheck-valve e to the exhaust-pipe 6 Having thus described my invention,what I claim asnew, and desire to secure by Letters Patent of the UnitedStates, is

1. In a fluid-motor, a pair of cylinders set diagonally opposite andaxially parallel to each other, valves controlling fluid admissionthereto, pistons therein consisting of cylinders fitting same and openat their outer ends, valves adapted to close their inner ends, astationary abutment opposite the outer end of each piston, a flexiblefluid-conductor connecting the open outer end of each piston to thecorrelative abutment, a yoke joining said pistons in operative relation,a supplementary cylinder, a piston therein connected to saidv yoke,pipes each opening at one end through one of said abutments its otherend being connected into the correlative end of said supplementarycylinder and valve-controlled exhaust-pipes connected to saidsupplementary cylinder at each end.

2, In a fluid-motor, a pair of cylinders set diagonally opposite andaxially parallel to each other, valves controlling fluid admissionthereto, pistons therein consisting of cylinders fitting same and openat their outer ends, valves adapted to close their inner ends, astationary abutment opposite the outer end of each piston, a flexiblefluid-conductor connecting the open outer end of each piston to thecorrelative abutment, a yoke joining said pistons in operative relation,a supplementary cylinder larger in internal diameter than thefirst-named cylinders, a piston therein connected to said yoke, pipeseach opening at one end through one of said abutments, its other endbeing connected into the correlative end of said supplementary cylinderand valvecontrolled exhaust-pipes connected to said supplementarycylinder at each end.

3. In a fluid-motor, a pair of cylinders set diagonally opposite andaxially parallel to each other, valves controlling fluid admissionthereto, pistons consisting of cylinders fitting said cylinders, andopen at their outer ends, valves adapted to close their inner ends, saidvalves being each mounted on a stem movable longitudinally in guides insaid pistons,-

rock-shafts mounted in said pistons each hav ing an interior armengaging the correlative stem and an exterior arm, and pins set in theline of motion of said exterior arm at each end limit of its movement, astationary abutment opposite the outer end of each piston, a flexiblefluid-conductor connecting the open outer end of each piston to thecorrelative abutment, a yoke joining said pistons in operative relation,a supplementary cylinder, a piston therein connected to said yoke, pipeseach opening at one end. through one of said abutments its other endbeing connected into the correlative end of said supplementary cylinderand valve-controlled exhaust-pipes connected to said supplementarycylinder at each end. 7

In testimony whereof I hereunto affix my signature in presence of twoWitnesses.

GEORGE R. BOND.

lVitnesses:

A. P. W'ooD, ALBERT A. WOOD.

